diff --git a/iscsiuio/src/uip/ipv6.c b/iscsiuio/src/uip/ipv6.c
index ced98a6..05efa73 100644
--- a/iscsiuio/src/uip/ipv6.c
+++ b/iscsiuio/src/uip/ipv6.c
@@ -49,7 +49,7 @@
 #include "dhcpv6.h"
 #include "ping.h"
 
-inline int best_match_bufcmp(u8_t *a, u8_t *b, int len)
+static inline int best_match_bufcmp(u8_t *a, u8_t *b, int len)
 {
 	int i;